8563013 has 4 divisors (see below), whose sum is σ = 8603808. Its totient is φ = 8522220.

The previous prime is 8563007. The next prime is 8563031. The reversal of 8563013 is 3103658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8563013 - 2¹⁸ = 8300869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8563003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20081 + ... + 20502.

It is an arithmetic number, because the mean of its divisors is an integer number (2150952).

Almost surely, 2^8563013 is an apocalyptic number.

It is an amenable number.

8563013 is a deficient number, since it is larger than the sum of its proper divisors (40795).

8563013 is a wasteful number, since it uses less digits than its factorization.

8563013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40794.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 8563013 is about 2926.2626334627. The cubic root of 8563013 is about 204.5858225033.

The spelling of 8563013 in words is "eight million, five hundred sixty-three thousand, thirteen".